Question
The average height of 18 students is 150 cm. If x more
students join whose average height is 165 cm, the class average becomes 153 cm. Find x.Solution
ATQ, 18 * 150 + x * 165 = (18 + x) * 153 2700 + 165x = (18 + x) * 153 165x – 153x = 2754 – 2700 12x = 54 x = 4.5
Five persons have different heights, W is taller than R, but shorter than E. R is taller than Q and T. Who is the 2 nd shortest person?
What can be the possible height of F?
Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at varian...
Statement : "The government has decided to build more highways to improve connectivity."
Assumptions :
I. Highways help in economic grow...
Five friends M, N, O, P and Q have different heights but not necessarily in the same order. M is taller than N. Q is taller than P, who is taller than N...
Six persons S, T, U, V, W and X have different weights in kg. T is heavier than U but lighter than S, who is the second heaviest among all. W is lighter...
In a row of boys facing the north, Amit is fifteenth from the left end and Dev is fifteenth from the right end. Subham, who is fifth to the right of Ami...
Who among the following person/persons are heavier than the fourth shortest persons?
I. R
II. T
III. W
N is the grandmother of _____.
Five persons W, U, Q, M and K have different weights. U is the lightest person. Q is heavier than M but lighter than K. W is lighter than M. Who among t...
Relevant for Exams:
